5-hydroxyisobenzofuran-1,3-dione

Also known as: 1,3-Isobenzofurandione,5-hydroxy-, 1,3-isobenzofurandione,5-hydroxy, 4-HYDROXYPHTHALIC ANHYDRIDE, 4-Hydroxy-phthalicanhydrid, 4-Hydroxy-phthalsaeure-anhydrid, 4-hydroxy-phthalic acid-anhydride, 4-hydroxyphthalic anhydride, 5-Hydroxy-1,3-Isobenzofurandione, 5-Hydroxy-1,3-isobenzofurandione, 98+%, 5-hydroxy-1,3-dihydro-2-benzofuran-1,3-dione, 5-hydroxy-2-benzofuran-1,3-dione, 5-hydroxyphthalic acid anhydride, Hydroxyisobenzofuran

5-hydroxyisobenzofuran-1,3-dione (CAS 27550-59-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H4O4 and a molecular weight of 164.11500 g/mol. Key properties include a melting point of 171-173°C, a boiling point of 407.8ºC at 760 mmHg, a density of 1.625 g/cm3 and a flash point of 179.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

27550-59-0

Jingsj CID

J-1402557-1

Molecular Formula

C₈H₄O₄

Molecular Weight

164.11500 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026